Well so far I have posted twice with issues and thanks to all the help from everyone I have found solutions to both problems, so lets try to go 3 for 3. LOL
My 4.0 in the 92 YJ with a 110 thousand on the odometer is very sluggish and about 60mph or so is as fast as it will reach in 4th. When we drop into 5th it's a steady decline until about 50mph and it just stays there unless I hit a hill, (ever see the commercial where the old dude on the bicycle passes his car, yea that's me
). I can get back to 4th and it will pick up a little. It will not turn more than 3 grand in 4th or 5th, it just runs out of umph. Here's a list of new parts.
Plugs, wires, cap, rotor, new exhaust, header, new cat, air filter and so on. I will be putting a new in line gas filter on tomorrow but the one on now is not that old according to the previous owner. When I put the header on I saw that the injectors were a little dirty so I ran a can of sea foam but no help so far. I'm running 33's with stock gears and a 4 inch lift. There's no heavy equiment on this thing so it's not that heavy. I don't need to go fast but it should pull a little better.
Thanks again to everyone for the help, Great Forum.